//
//  QRCodeViewController.m
//  BaoGongBao
//
//  Created by User on 14/11/18.
//  Copyright (c) 2014年 irule. All rights reserved.
//

#import "QRCodeViewController.h"

@interface QRCodeViewController ()

@end

@implementation QRCodeViewController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
	self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
	if (self) {
		// Custom initialization
	}
	return self;
}

- (void)viewDidLoad
{
	[super viewDidLoad];
	self.view.backgroundColor = [UIColor grayColor];
	UIButton * scanButton = [UIButton buttonWithType:UIButtonTypeCustom];
	//[scanButton setTitle:@"取消" forState:UIControlStateNormal];
    [scanButton setImage:[UIImage imageNamed:@"exit_off"] forState:UIControlStateNormal];
	scanButton.frame = CGRectMake(195, 420, 35, 35);
	[scanButton addTarget:self action:@selector(backAction) forControlEvents:UIControlEventTouchUpInside];
	[self.view addSubview:scanButton];

    UIButton * flashButton = [UIButton buttonWithType:UIButtonTypeCustom];
    //[flashButton setTitle:@"打开闪光灯" forState:UIControlStateNormal];
    flashButton.frame = CGRectMake(90, 420, 35, 35);
    [flashButton setImage:[UIImage imageNamed:@"flash_on"] forState:UIControlStateNormal];
    [flashButton setImage:[UIImage imageNamed:@"flash_off"] forState:UIControlStateSelected];
    [flashButton addTarget:self action:@selector(turnOnLed:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:flashButton];
    
	UILabel * labIntroudction= [[UILabel alloc] initWithFrame:CGRectMake(15, 40, 290, 50)];
	labIntroudction.backgroundColor = [UIColor clearColor];
	labIntroudction.numberOfLines=2;
	labIntroudction.textColor=[UIColor whiteColor];
	labIntroudction.text=@"将二维码图像置于矩形方框内，离手机摄像头10CM左右，系统会自动识别。";
	[self.view addSubview:labIntroudction];


	UIImageView * imageView = [[UIImageView alloc]initWithFrame:CGRectMake(10, 100, 300, 300)];
	imageView.image = [UIImage imageNamed:@"pick_bg"];
	[self.view addSubview:imageView];

	upOrdown = NO;
	num =0;
//	_line = [[UIImageView alloc] initWithFrame:CGRectMake(50, 110, 220, 2)];
//	_line.image = [UIImage imageNamed:@"line.png"];
//	[self.view addSubview:_line];
//
//	timer = [NSTimer scheduledTimerWithTimeInterval:0.02 target:self selector:@selector(animation1) userInfo:nil repeats:YES];




}

-(IBAction)turnOnLed:(UIButton *)sender
{
    sender.selected = !sender.selected;
    AVCaptureDevice *device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
    if ([device hasTorch] && sender.selected) {
        [device lockForConfiguration:nil];
        [device setTorchMode: AVCaptureTorchModeOn];
        [device unlockForConfiguration];
    }
    else if([device hasTorch] && !sender.selected){
        [device lockForConfiguration:nil];
        [device setTorchMode: AVCaptureTorchModeOff];
        [device unlockForConfiguration];
    }
}

-(void)turnOffLed
{
    AVCaptureDevice *device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
    if ([device hasTorch]) {
        [device lockForConfiguration:nil];
        [device setTorchMode: AVCaptureTorchModeOff];
        [device unlockForConfiguration];
    }
    
}

-(void)animation1
{
	if (upOrdown == NO) {
		num ++;
		_line.frame = CGRectMake(50, 110+2*num, 220, 2);
		if (2*num == 280) {
			upOrdown = YES;
		}
	}
	else {
		num --;
		_line.frame = CGRectMake(50, 110+2*num, 220, 2);
		if (num == 0) {
			upOrdown = NO;
		}
	}

}
-(void)backAction
{

	[self dismissViewControllerAnimated:YES completion:^{
		[timer invalidate];
	}];
}
-(void)viewWillAppear:(BOOL)animated
{
    [super viewWillAppear:YES];
	[self setupCamera];
}
- (void)setupCamera
{
	// Device
	_device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];

    NSError *error = nil;
	// Input
	_input = [AVCaptureDeviceInput deviceInputWithDevice:self.device error:&error];
    if (error) {
        UIAlertView *alt = [[UIAlertView alloc]initWithTitle:@"提示" message:@"您的相机没有对报工宝授权,打开手机设置->隐私->相机" delegate:self cancelButtonTitle:@"去授权" otherButtonTitles:nil, nil];
        [alt show];
        return;
    }
    _line = [[UIImageView alloc] initWithFrame:CGRectMake(50, 110, 220, 2)];
    _line.image = [UIImage imageNamed:@"line.png"];
    [self.view addSubview:_line];
    timer = [NSTimer scheduledTimerWithTimeInterval:0.02 target:self selector:@selector(animation1) userInfo:nil repeats:YES];
	// Output
	_output = [[AVCaptureMetadataOutput alloc]init];
	[_output setMetadataObjectsDelegate:self queue:dispatch_get_main_queue()];
	// Session
	_session = [[AVCaptureSession alloc]init];
	[_session setSessionPreset:AVCaptureSessionPresetHigh];
	if ([_session canAddInput:self.input])
	{
		[_session addInput:self.input];
	}
	if ([_session canAddOutput:self.output])
	{
		[_session addOutput:self.output];
	}
	// 条码类型 AVMetadataObjectTypeQRCode
    NSLog(@"%@",self.output.availableMetadataObjectTypes);
    if ([self.output.availableMetadataObjectTypes containsObject:AVMetadataObjectTypeInterleaved2of5Code]) {
        [_output setMetadataObjectTypes:[NSArray arrayWithObjects:
                                         AVMetadataObjectTypeUPCECode,
                                         AVMetadataObjectTypeCode39Code,
                                         AVMetadataObjectTypeCode39Mod43Code,
                                         AVMetadataObjectTypeEAN13Code,
                                         AVMetadataObjectTypeEAN8Code,
                                         AVMetadataObjectTypeCode93Code,
                                         AVMetadataObjectTypeCode128Code,
                                         AVMetadataObjectTypePDF417Code,
                                         AVMetadataObjectTypeQRCode,
                                         AVMetadataObjectTypeAztecCode,
                                         AVMetadataObjectTypeInterleaved2of5Code,
                                         AVMetadataObjectTypeITF14Code,
                                         AVMetadataObjectTypeDataMatrixCode,
                                         nil]];
    }
    else{
    [_output setMetadataObjectTypes:[NSArray arrayWithObjects:
                                     AVMetadataObjectTypeUPCECode,
                                     AVMetadataObjectTypeCode39Code,
                                     AVMetadataObjectTypeCode39Mod43Code,
                                     AVMetadataObjectTypeEAN13Code,
                                     AVMetadataObjectTypeEAN8Code,
                                     AVMetadataObjectTypeCode93Code,
                                     AVMetadataObjectTypeCode128Code,
                                     AVMetadataObjectTypePDF417Code,
                                     AVMetadataObjectTypeQRCode,
                                     AVMetadataObjectTypeAztecCode,
                                     AVMetadataObjectTypeInterleaved2of5Code,
                                     AVMetadataObjectTypeITF14Code,
                                     AVMetadataObjectTypeDataMatrixCode,
                                     nil]];
    }
	// Preview
	_preview =[AVCaptureVideoPreviewLayer layerWithSession:self.session];
	_preview.videoGravity = AVLayerVideoGravityResizeAspectFill;
	_preview.frame =CGRectMake(20,110,280,280);
	[self.view.layer insertSublayer:self.preview atIndex:0];

	// Start
	[_session startRunning];
}
#pragma mark AVCaptureMetadataOutputObjectsDelegate
- (void)captureOutput:(AVCaptureOutput *)captureOutput didOutputMetadataObjects:(NSArray *)metadataObjects fromConnection:(AVCaptureConnection *)connection
{

	NSString *stringValue;

	if ([metadataObjects count] >0)
	{
		AVMetadataMachineReadableCodeObject * metadataObject = [metadataObjects objectAtIndex:0];
		stringValue = metadataObject.stringValue;
	}

	[_session stopRunning];
	[self dismissViewControllerAnimated:YES completion:^
	 {
		 [timer invalidate];
		 NSLog(@"%@",stringValue);
		 if ([self.delegate respondsToSelector:@selector(QRCodeViewControllerDelegateFinish:)]) {
              [self.delegate QRCodeViewControllerDelegateFinish:stringValue];
		 }
	 }];
}

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{
    [self dismissViewControllerAnimated:YES completion:^
     {
         [timer invalidate];
         if ([self.delegate respondsToSelector:@selector(QRCodeViewControllerDelegateFinish:)]) {
             [self.delegate QRCodeViewControllerDelegateFinish:@""];
         }
     }];
}

- (void)didReceiveMemoryWarning
{
	[super didReceiveMemoryWarning];
	// Dispose of any resources that can be recreated.
}

@end
